Setoutsumi.

Sō Utsumi doesn't have many friends. After school and before going to a private institute, he kills time by doing nothing on the riverside. One day, Shōkichi Seto appears in front of him. Shōkichi quit the soccer team and has nothing to do. They spend time together. In front of the two guys, Ichigo Kashimura and Hatsumi, from the same high school, appear.